单项选择题

Uncharted lights，fog signals and radar beacon transmissions may be（）near the station.

A.encountered
B.met
C.contacted
D.seen

相关考题

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单项选择题Two navigational hazards are located near to each other，but each is marked by an individual cardinal buoyage system. The buoys of one cardinal system may be identified from the other system by（）.

A.the differing light colors
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C.one system using horizontal bands while the other system uses vertical stripes
D.the difference in the periods of the light

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A.the light-house
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单项选择题There is sufficient anchorage for（）at all time around the No.1 buoy and for smaller vessels around the No.4 buoy.

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地文航海

Uncharted lights，fog signals and radar beacon transmissions may be（）near the station.